Import necessary modules

from pathlib import Path

from ipyniivue import download_dataset

BASE_API_URL = "https://niivue.com/demos/images/"
DATA_FOLDER = Path("images")

# Download data for example
download_dataset(
    BASE_API_URL,
    dest_folder=DATA_FOLDER,
    files=[
        "complex.nii.gz",
    ],
)

Downloading complex.nii.gz...
Dataset downloaded successfully to images.

import ipywidgets as widgets
from IPython.display import display

from ipyniivue import NiiVue

# Setup NiiVue instance
nv = NiiVue()

intensity_output = widgets.HTML(" ")


@nv.on_location_change
def handle_intensity_change(location):
    """Handle location change."""
    intensity_output.value = location["string"]


nv.load_volumes(
    [
        {"path": DATA_FOLDER / "complex.nii.gz"},
    ]
)

# Create other widget

slice_type_dropdown = widgets.Dropdown(
    options=[
        ("Axial", 0),
        ("Coronal", 1),
        ("Sagittal", 2),
        ("Render", 4),
        ("A+C+S+R", 3),
    ],
    value=3,
    description="Slice Type:",
)


def on_slice_type_change(change):
    """Set slice type."""
    nv.set_slice_type(change["new"])


slice_type_dropdown.observe(on_slice_type_change, names="value")

# Display all

display(widgets.VBox([slice_type_dropdown, nv, intensity_output]))